Nighttime office scene, cold blue dark-toned atmosphere, CCD direct flash photography style, vertical …

Nighttime office scene, cold blue dark-toned atmosphere, CCD direct flash photography style, vertical 9:16 composition. The image references high-end realistic portrait photography, slightly tilted composition, camera angle between low angle and eye level, with a bit of casual snapshot feel but refined composition. An adult East Asian woman sits on the edge of an office desk, body slightly turned, forming a natural elegant S-curve. Shoulder and neck elongated, back slightly straightened, hips slightly pushed to the side, one leg crossed over the other, leg lines extending toward the bottom of the frame, pose restrained, stable, dangerous and alluring. She looks directly at the camera with half-lowered eyes, gaze cold, clear, with a sense of pressure, expression restrained and distant, presenting a cold, glamorous, bewitching siren pose. She wears black thin-framed glasses, black hair naturally tied up, a few loose strands falling on both sides of her cheeks. She wears a white slim high-neck top, black high-waisted short skirt, black semi-sheer stockings, black pointed high heels. Skin is semi-matte cool white tone, retaining real skin texture, fine pores, natural highlights and slight imperfections, do not over-smooth. Sitting on the floor, body slightly leaning forward and slightly turned toward the camera, one shoulder naturally lowered, pose relaxed and lazy; legs naturally bent and crossed, one leg extending forward, the other tucked in front of the body, forming soft extended leg lines; one hand supported behind the side of the body to support weight, the other hand naturally placed on the floor or beside the leg; head slightly tilted, chin slightly low, gaze calmly looking at the camera, overall like a relaxed candid moment shot indoors at night. Overall pose like a cool female teacher / high-intelligence urban woman explaining formulas in a nighttime office. The background is a large whiteboard filled with mathematical formulas, functions, integrals, series, statistical symbols and derivation processes, handwriting natural, does not need to be fully readable, but should have real whiteboard marker writing texture. Outside the office window is a nighttime city, high-rise lights vaguely visible, blinds, office chair, folders, mug, pen holder and other details enhance realism. Lighting uses CCD direct flash effect: frontal cool white flash illuminates the character's face, white top and leg contours, forming clear highlights and hard shadows; background is darker, blue-black nighttime office atmosphere obvious. The image has slight grain, low saturation, cool tones, real digital flash texture. Overall style is cold, glamorous, restrained, intellectual, dangerously bewitching, high-end night portrait photography. Negative Prompt: No anime style, no plastic skin, no over-smoothing, no exaggerated expression, no vulgar pose, no deformed fingers, no extra fingers, no incorrect limb structure, no proportion imbalance, no excessive exposure, no cheap influencer studio-shot feel, no garbled whiteboard text, no watermark, no logo, no blurred face, no overly strong AI feel.